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Scrat [10]
3 years ago
9

Select the correct answer. Which statement is true according to the quantum model of the atom? A. When an electron drops down fr

om a high energy level to a lower one, light energy is emitted. B. When an electron jumps up from a low energy level to a higher one, light energy is emitted. C. Every orbit around the nucleus of an atom is the same energy level. D. After they emit light, electrons are sucked into the nucleus of the atom.
Chemistry
2 answers:
nalin [4]3 years ago
3 0
D: After they emit light, electrons are sucked into the nucleus of the atom.
aivan3 [116]3 years ago
3 0

Answer:

The correct statement is option a, that is, when an electron drops down from a high energy level to a lower one, light energy is emitted.

Explanation:

The energy is quantized that is every orbit exhibits a fixed energy value. When the absorption of heat takes place by the atom, the electrons go from low energy level to the high level of energy. However, when energy or heat is discharged by the atom then the electrons travel from the level of high energy to the level of low energy. As a consequence, this heat is discharged in the form of visible light. Therefore, of the given statements, the accurate statement is that when an electron drops down from a high energy level to a lower energy level, the emission of light takes place.

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mestny [16]

Answer:

An atom containing 11 electrons

Explanation:

Metal atoms form ions by a loss of electrons whereas non-metal atoms form ions by the gain of electrons.

The group 1 elements or alkali metals form lose their one valence shell electrons when forming ions; Group 2 metals lose two while Group 3 lose three. On the other hand, non-metal atoms found in Group 5, 6, and 7 forms ions by gaining one, two and three electrons respectively.

Using the electronic configuration of atoms, their groups in the Periodic Table can be determined.

An atom containing 6 electrons has the configuration 2,4 and thus belongs to Group 4.

An atom with 2 electrons belongs to Group 2

An atom with 11 electrons has the configuration 2,8,1 and thus belongs to Group 1

An atom with 10 electrons has the configuration 2,8 and thus belongs to Group 8

An atom with 8 electrons has the configuration 2,6 and thus belongs to Group 6.

From the above, it can be seen that an atom containing 11 electrons belongs to Group 1 and will lose an electron to form an ion.

8 0
3 years ago
How many grams of NaOH are needed to neutralize 50 grams of H2SO4
slavikrds [6]

Answer:

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Explanation:

8 0
3 years ago
Read 2 more answers
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Vesnalui [34]

Answer:

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